The influence of plastic yielding on breakdown pressure in hydraulic fracturing
Abstract
This paper presents a semi-analytical large strain elastoplastic analysis of an internally pressurized wellbore embedded in a Mohr-Coulomb medium. The constitutive equations for a non-associated deformation theory with strain hardening material were fitted on true stress-strain data from triaxial tests on Jurassic shale. The model is used to investigate the effect of plastic yielding on the initiation of a tensile fracture and to interpret the experimental results obtained from hydraulic fracturing tests on hollow cylinders.
Fields of Study & Subjects
Hydraulic Fracturing and Reservoir Analysis
Oil and Gas Production Techniques
Geotechnical and Geomechanical Engineering
Publication details
- Journal / source
- Rock Mechanics
- Publisher
- CRC Press
- Pages
- 281–286
- Publication date
- 18 February 2026
- Language
- EN
- Document type
- Book chapter